US732196A - Terminal-socket. - Google Patents

Description

PATENTED JUNE SO, 1903.

C. LEIGHTENSGHLAG.

TERMINAL SOCKET.

APPLICATION FILED MAR. 10, 1900.

NO MODELv UNITED STATES Patented June 30, 1903,

PATENT OFFICE.

HALSKE ELECTRIC COMPANY CORPORATION OF ILLINOIS.

OF AMERICA, OF CHICAGO, ILLINOIS, A

TERMINAL-SOCKET.

SPECIFICATION forming part of Letters Patent No. 732,196, dated June 30, 1903. Application filed March 10, 1900. Serial No- .209. (N0 model.)

To all whom it may concern.-

Be it known that I, CARL LEICHTENSCHLAG, a subject of the Emperor of Germany, residing at Berlin, Germany, have invented a certain new and useful Improvement in Terminal-Sockets, (Case No. 348,) of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to terminal-sockets, and more particularly to that class of terminal -sockets in which the external portion thereof serves both as a contact portion and as a supporting means for the terminal-plug to be inserted therein, and has for its object the provision of an improved and simplified construction for terminalsockets of this class.

In three-wire systems and in systems in which one conductor of the system is grounded it is frequently unnecessary to have both contact-terminals of the terminal-socket inclosed and insulated from the surrounding external portions of the socket. A simplified, durable, and efficient construction is hereby obtained, certain portions which are ordinarily employed in the terminal-sockets being dispensed with.

It is the primeobject of my invention to provide improved means for securely uniting the contact-terminals of the terminal-socket to an insulating-base.

Generally speaking, my invention comprises in its preferred embodiment a fiat rounded insulating-base, constructed, preferably, of insulating material,which is provided with two radial recesses, through which extensions provided upon the external contact portion are passed, the said extensions being bent about portions of the said base upon the opposite sides thereof, whereby a secure and readily-made attachment between the said external contact and the insulating-base is secured. A second spring-acting contact is placed in the central portion of the insn1at-' ing-base and secured thereto preferably by means of a screw. Suitable binding-screws are provided both upon the external preferablyscrew-threaded contact portion and upon aconducting angle-piece in electrical communication with the central contact portion.

I will describe my invention more in detail by reference to the accompanying drawings, illustrating the preferred embodiment thereof, in which Figure 1 is a cross-sectional view of asocket built in accordance with my invention, a lamp being shown in place and circuit connections being indicated diagrammatically.

Fig. 2 is a bottom view of the said socket. Fig. 3 is a cross-sectional view on line a a of Fig. 2. Fig. 4 is a top view of the same, the lamp being removed.

Like characters of reference indicate similar parts throughout the views.

I have shown a source of current 1 as supplying current to the circuit 2, my improved socket 3 being shown as included in said circuit, furnishing current therethrough to the lamp 4.

In the preferred embodiment of my invention I construct a terminal-socket as shown, the same being provided with a flat rounded insulating-piece 5, provided with two radial longitudinal slots 6 6 at opposite points thereof. I also preferably provide recesses 7 7 in the lower portion of the insulating-piece 5 in line with the slots 6 6. An external preferably screW-threaded con tact-terminal 8,which secures a lamp, fuse-plug, or some other form of translating device in place, is preferably provided with two longitudinally-extending arms 9 9, the said arms being preferably of the same width as the slots 6 and the recesses 7. The arms are passed through the slots 6 and preferably bent around the lower and rounded corners of the insulating-base 5. A binding-screw 10 is preferably fastened to a sleeve 11, the said sleeve being united to the external contact 8. A second contact 12 is preferably secured at the central portion of the insulating-base by means of a screw 13, the said contact being in electrical commnnication with an easily-accessible bindingscrew let through the agency of an angle-piece 15. This second contact. is preferably of spring-like construction, so that a firm contact between the lamp or translating device and the said contact may be maintained. Re-

cesses 16 16 are preferably provided, so that wires may be readily passed to the bindingscrews 10 14.

As will be seen, a terminal-socket is provided which is constructed of very few parts and whose parts are firmly and rigidly united together.

I have herein shown and particularly described an embodiment of my invention; but I do not wish to limit myself to the precise construction and arrangement shown, as modifications thereof may readily be made by those skilled in the art without departing from the spirit thereof, and

I therefore claim as new, and desire to secure by Letters Patent, the following:

1. In a terminal-socket, the combination with an insulating-base,of a terminal-contact provided with longitudinally-extending arms, slots provided in said base through which said arms are passed, and recesses provided in said base wherein said arms project, thereby securing a firm engagement between the said base and the said terminal-contact, substantially as described.

2. In a terminal-socket, the combination with an insulating-base, ofa receptacle adapt ed to have a plug'inserted therein, longitudinally-extending arms provided upon said receptacle, and recesses provided in the said base wherein said arms project, thereby securing a firm engagement between the said base and the said receptacle, substantially as described.

3. In a terminal-socket, the combination with an insulating-base,-of a receptacle for receiving a plug inserted therein, longitudinally-extending arms provided upon said receptacle, slots provided in said base through v which said arms are passed, and recesses provided in said base wherein said arms are adapted to project, thereby securing a firm engagement between said base and said receptacle, substantially as described.

4. In a terminal-socket, the combination with an insulating-base,of a circular terminalcontact provided with longitudinally-extending arms, slots provided in said base through which said arms are passed, recesses provided in said base wherein said arms project, thereby securing a firm engagement between the said base and the said terminal-contact, and a binding-post provided upon the said terminal-contact, substantially as described.

5. In a terminal-socket, the combination with an insulating-base, of a receptacle adapted to have a plug inserted therein to convey current thereto, longitudinally extending arms provided upon said receptacle, recesses provided in the said base wherein said arms project, thereby securing a firm engagement between the said base and the said receptacle, and a binding-post provided upon said receptacle, substantially as described.

6. In a terminalesocket, the combination with an insu1ating-base,ofa circular terminalcontact provided with longitudinally-extending arms, slots provided in said base through which said arms are passed, recesses provided in said base wherein said arms project, thereby securing a firm engagement between the said base and the said terminal-contact, a central contact provided upon said base, an angle-piece 15, and a binding-post therefor, substantially as described.

7. In a terminal-socket, the combination with an insulating-base, of a receptacle adapted to have a plug inserted therein to convey current thereto, longitudinally extending arms provided upon said receptacle, recesses provided in the said base wherein said arms project, thereby securing a firm engagement between the said base and the said receptacle, a central contact provided upon said base, an angle-piece 15," and a binding-post therefor, substantially as described.

8. The combination with an insulating-base 5, of an external screw-threaded contact 8, arms 9, 9 provided upon said external contact, slots 6, 6 through which said arms are passed, recesses 7, 7 wherein said arms project, and a central contact 12 secured upon said. base, substantially as described.

9. The combination with an insulating-base 5, of an vexternal screw-threaded contact 8, arms 9, 9 provided upon said external contact, slots 6, 6 through which said arms are passed, recesses 7, 7 wherein said arms project, a central contact 12 secured upon said base, an angle-piece 15, and a binding-post 14, substantially as described.

10. The combination with an insulatinghase 5, of an external screw-threaded contact 8, arms 9, 9 provided upon said external con tact, slots 6, 6 through which said arms are passed, recesses 7, 7 wherein said arms project, a central contact 12, and a screw 13 for securing the same to the said base, substantially as described. 7

In witness whereof I hereunto subscribe my name this 14th day of February, A. D. 1900.

CARL LEIGHTENSOHLAG.

Witnesses:

WOLDEMAR HAUPT, WILLIAM MAYNER.

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